Deprecate the updater integration (#21742)

source/_integrations/default_config.markdown

@@ -39,7 +39,6 @@ This integration is a meta-component and configures a default set of integration
 - [System Health](/integrations/system_health/) (`system_health`)
 - [Tag](/integrations/tag/) (`tag`)
 - [Timer](/integrations/timer/) (`timer`)
-- [Updater](/integrations/updater/) (`updater`)
 - [USB](/integrations/usb/) (`usb`)
 - [Webhooks](/integrations/webhook) (`webhook`)
 - [Zero-configuration networking (zeroconf)](/integrations/zeroconf/) (`zeroconf`)

source/_integrations/updater.markdown

@@ -13,6 +13,12 @@ ha_platforms:
   - binary_sensor
 ---
 
+<div class='note warning'>
+
+This integration is deprecated and will be removed in Home Assistant Core 2022.5.
+
+</div>
+
 The `updater` binary sensor will check daily for new releases of the Home
 Assistant Core. The state will be "on" when an update is available. Otherwise,
 the state will be "off". The newer version, as well as the link to the release
@@ -20,9 +26,8 @@ notes, are attributes of the updater.
 
 ## Configuration
 
-This integration is by default enabled, unless you've disabled or removed the [`default_config:`](/integrations/default_config/) line from your configuration. If that is the case, the following example shows you how to enable this integration manually:
-
 ```yaml
+# Example configuration.yaml entry
 updater:
 ```